CVE-2026-116842

Medium

Description

DevilutionX 1.4.0 through 1.5.5 contains a heap buffer overflow vulnerability in the bundled libmpq libmpq__archive_dup routine when opening crafted MPQ archives. Attackers can supply an MPQ archive whose block table count exceeds its hash table count, causing memcpy to overflow the heap during startup and crash the game.

SeverityMedium

CVSS6.1

Exploit probability—

ProductDevilutionX

PublishedOct 27, 2026

First seenOct 27, 2026

Weakness typeCWE-787Out-of-bounds write

How to fix

Patches

github.com/diasurgical/DevilutionX/pull/8482

Affected products

Product	Affected versions	Fixed in
diasurgical DevilutionX	1.4.0 ≤ v ≤ 1.5.5	—

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